Crusher



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@me EL3, 1925 B. A. MlTCHn-:LL

' 4 CRUSHER Filed may 24, 192s o0 1HE) M@ l m ww w C W7. m 6/ 5 5 M Z 8 y @Y 4; WMMMMMUFWUK/ww @k JM MAA/MA V, n bm. ,www ,.m. w,

The relatively fixed crusher member 15, having a lining 21, is surmounted by a frame 16 which supports, through an internally threaded ring 33, so as to provide for vertical adjustment, a casing or housing 28 in which may be disposed a motor 43. tubular shaft 40 of the rotor 44 is mounted in a sleeve bearing 41, in the tubular extension 17 of the housing 28, and in a composite radial and thrust bearing 42 at the upper end of the housing. At the lower end of the extension 17 there is formed a spherical enlargement 18 upon which is suspended, so as to be capable of gyratory movement, the relatively movable member 20 of the crusher, which carries the tapered mantle 25 to form, with Ithe liningv21, a space with converging walls between which the crushing of the material is carried on progressively in the operation of the crusher. The spherical enlargement 18 is received in the construction shown in a spherical seat formed in two rings 183l and 18b which are seated in the sleeve-like extension. of theJ crusher member 20 and are held in place by a sleeve nut 18C. Within the mantle 25 are supported the raeeways 48 with which coact, under the influence of centrifugal action, the balls or lintermediate members 46, the latter being received in recesses 47 of the balanced impeller 45.

The parts thus far referred to and de@ Ascribed herein merely as a structure adapted for the application of the present invention, are constructed and arranged substantially as described in said ap lication and for convenience are identifie as far as possible, by the same reference numerals as those employed in said application, with particular reference to the embodiment of the invention as shown in Figures 2 and 3 of the drawings of said application.

In 4the several embodiments of the invention described in said'application, "the impeller rotates upon an axis which is fixed with respect to the stationary member of the crusher and the movable member of the crusher rates about such xed axis, with the resu t, as already explained, that the radial distance of the balls or intermediate members 46 from the axis of the impeller, may varyand, as a consequence, that the linear velocity of such balls or intermediate .members may vary during each revolution of the balls about the axis of the impeller. In accordance with the present invention, however, provision is made whereby the radial distance of the balls from the axisof the impeller shall be constant and the linear velocity of the balls shall also be constant if, as is presumed, the speed of rotation of the s impeller is constant. To this end, the impeller is so Vsupported as to be` concentric at 'all timeswith the movable member 20 of the crusher and thereforeA to gyrate with the l and a freely mova crusher about the center of the spherical- 'support 18 of the movable crusher member head of the movable crusher member 20,

and in a sleeve bearing 45d placed in the plate 22 which, supports the mantle 25 and is held to the head of the member 20 by bolts 24, as described in said application.

It will be understood that the mounting of the shaft of the impeller in bearings which are carried by the vmovable member of the crusher and in concentricity therewith, constitutes a convenient means by which the radial distance of the 'balls or intermediate members from the axis of the impeller is constant under all conditions of operation and that, therefore, the linear velocity of the balls or intermediate members will be constant, if the speed of rotation of the impeller is constant, and the disadvantages due to variation in linear velocity will be overcome. It will be obvious that various changes in details of construction will be made to suit different conditions of use, as in the several embodiments of the main invention shown in said application, and that the present inventionv, except as indicated in the claims, is not limited to any particular construction.

I claim as my invention:

1. In a crusher, the combination of a rela tively xed crusher member, a relatively movable crusher member, a balanced impeller, a freely movable intermediate body interposed between the impeller and the relatively movable crusher member and subject to the action of centrifugal force, and means to maintain the radial distance of such in, termediate body-from the axis of the impeller constant throughout the revolution of the intermediate body.

'2. In acrusher, the combination of arelatively lixed crusher member, a relatively movable crusher member, a balanced impeller, a freely movable intermediate body interposed between the impeller and the relatively movable crusher member and subject to the action of centrifugal force, and means to maintain the impel er in concentricity with the relatively movable crusher member.

3. In a crusher, the combination of a relatively xed crusher member, a gyratory crusher member, a balanced impeller, a driving shaft for the impeller, supported for gyration with the yratory crusher member,

l intermediate body in-.

lli

v and actuated by neeaaov terposed between the impeller and the gyratory member and subject to the action ot.

.member suspended from the trame, an impeller, an impeller shalt moted in bear; ings in the ratory crusher member and loosely jointe.: with the motor shaft, and a freely movable intermediate body interposed between the impeller and the gyratory member and subject to the action of centritugal torce. f o. lin a crushing apparatus, a crusher casing forming a crushing chamber, a weighted bod rotatable on its own axis and tree to shi` its anis under centrifugal torcev developed during rotation, a flexible driving connection 'for rotating said body, and a crusher head having a universal suspension the direct contact oi said weighted body. 6.' lin a crushing apparatus, a Crusher casing forming a crushing chamber., a weighted body rotatable on its own axis and tree to shift its axis under centrifugal llorce developed yduring rotation, a deaible driving connection for rotating said body, and a Crusher head having a universal suspension and actuated by the direct contact of said weighted body, the crusher head having an interior diameter substantially larger than theidiameter oli the weighted' body.

7. lln a crushing apparatus, a crusher casing forming acrushing chamber, a crusher head having a universalsuspension, a endulum within the crusher head, and a exible driving connection tor rotatin said pendulum on its own anis, wherey the crusher head is actuated by the-movement ol the pendulum under the centrifugal torce developed upon rotation ol the latter.

8. ln a crushing apparatus, a Crusher 'casing loing a crushin chamber., a crusher head having a universe suspension and provided with an interior race, a ndulum within the crusher head ot less diameter'than that ot the race and' having a portion adapted'to run. on said race, and a @crible drivinguconnection lor 4rotating said'ndulum on itsv ownanis,whe`reby the pendulum is,` caused to 'tun-'on' said race, to. aetuateA they crusher n head'.

head having a universo suapenaionand rorun on said race'a drive ehafufand a "connection including a. universal bint,- lnafmveexiI p said drive shaft andthe pen ulum, for rototing the latter ony its own axis, whereby 9. ln a crushing apparatus, a crushercaSL-- ing forming a erushin vclivmbenl,a crusher f the pendulum is caused to run on said race, to actuate the crusberhead.

10. lln a crushing apparatus, a crusher casing forming a crushing chamber, a crusher head having a universal suspension and provided with an interior race, a pendulum within the Crusher head ot less diameter than that ot the race and having a portion adapted to run on said race, a dexible driving connection for rotating said pendulum on its own axis, wherebythe pendulum is caused to run on said race, thereby to actuate the crusher head, and means lor preventing the pendulum trom taking a vertical position. y i

ll. lin a crushing apparatus, a crusher casing forming a crushing chamber, a crush- 'er head having a ball and socket suspension and provided with an interior race, a pendulum within the Crusher head 4and having a portion adapted to run on said race, the diameter of said portion being less than the diameter oil the race, a drive shalt, and a connection including a universal joint. between the drive shalltand the pendulum for rotating the latter on its own axis.

l2. A gyratory crusher, comprising in combination, a yCrusher bowl, a crusher head mounted for gyratory movement within said bowl, andl means within the head, positively rotatably about. a doating4 anis and centrifugally moved outwardly to engage the head, lto impart gyratory movement thereto, said means being yieldable inwardly toward the axis of said 'bowl against the centrifugal torce acting thereon.

13. A gyratory crusher, comprisin in combination, a crusher bowl, `a Crusher ead 'ill lll@

mounted tor gyratory movement within said r l bowl, and rotatableluniversally supported means within said he, adapted to co-act therewith to impart .gyratory movement thereto. y

lt. A gyratory crusher, comprising in combination, .a Crusher bowl, 'a Crusher head mounted tor gyratory movent within said bowl, and rotabile univelly supported means within said head, adapted to co-act therewith to 'impart gyratory movementv theretogsaid head d means `being yieldable toward the anis ofthe .crusher bowl. 1 l5. it g'yra'toryv crusher, comprisin l in ldd llllb combination, aerusherbowl, a crusbcr cad ,mounted tor ratoryj movement within said, Qbowl, and havn an interior surface, and a :driven element rotatable about its axis within SaidI head,of"smaller e'ectivediameter tliansaid interior eur'face, said means beingv movable to4 engagesaid surface to impart' "gyratoiy movement to" said head.

16. A lgyratory Crusher, comprisin I in combinationra crusher bowl, ,a crusheread mounted ,for

ratory mov'errient within said 'y bowl and having' an interior surface, and a positively driven gyratoryelement within said bowl of smaller eifective diameter than said surface, said means co-acting with said lurace to impart gyratory movement to said 17. A gyratory crusher, comprising in combination, a Crusher bowl, a crusher head mounted for gyratory movement with said bowl, and a positively rotated centrifugally acting means within said head for effecting gyratory movement thereof.

18. A gyratory crusher, comprising in combination, a crusher bowl, a Crusher head mounted for gyratory movement within said bowl, and positively rotated means within said head movable outwardly by centrifugal force into engagement with said head to impart gyratory movement thereto.

19. A gyratory crusher, comprising lin combination, a Crusher bowl, a crusher head mounted for gyratory movement within said bowl, and means within said head rotatable about its own axis and constrained by centrifugal force to normally move in a path about the axis of the bowl, and zo-acting with said head to impart gyratory movement thereto. i Y

20. A gyratory Crusher, comprising in combination, a Crusher bow1,.a Crusher head mounted for gyratory movement within said bowl, and a driven means havin a gyratory movement within said head an capable of movement toward and from the axis of the Crusher bowl and adapted to engage said head to e'ect gyratory movement thereof.

21. A gyratol'y Crusher, comprising in combination, a crusher bowl, a Crusher head mounted for gyratory movement within said bowl, and a positively rotated means within said head also having a variable or non-fixed orbital movement about the axis of the Crusher bowl adapted to engage the crusher head to effect gyratory movement thereof.

This specification signed'this 23d day of May, A. D. 1923.

BENJAMIN A. MITUHELL. 

